description: Specifies which population criteria is the input to an observation definition, or the initial population for a ratio numerator or denominator.
package_name: hl7.fhir.us.cqfmeasures
derivation: constraint
name: CriteriaReference
type: Extension
elements:
  url:
    type: uri
    pattern: {type: Uri, value: 'http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/cqfm-criteriaReference'}
    index: 0
  value:
    choices: [valueString]
    index: 2
  valueString: {type: string, choiceOf: value, index: 3}
package_version: 2.0.0
class: extension
kind: complex-type
url: http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/cqfm-criteriaReference
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 2.0.0